Latest 5.3 stage 2.5 from Jay/Absolute
#1
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Latest 5.3 stage 2.5 from Jay/Absolute
We just installed a set of Jay/Absolute speed 5.3 heads on a car (C5) that already had our G5X-1 cam 228/234 and mid length headers. The only NEW mod was the heads only. The car had 369 rwhp before, with just the stock LS1 heads and mid length headers. the after number was 424rwhp. Compression was 11.1:1 and we still had stock injectors because the G5X1 cam is not big enough to need the larger injectors yet (but close).
This was the new C & C port from Jay, and I just wanted to post up these numbers since they were extra high for just a head swap.
Thanks
Lou Gigliotti
This was the new C & C port from Jay, and I just wanted to post up these numbers since they were extra high for just a head swap.
Thanks
Lou Gigliotti
#3
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Originally Posted by VINCE
55rwhp from a head swap is awesome!!! Do you have a graph Lou?
I did some tuning, but this was a G5X-1 daily driver, so the guy was just interested in nice driver, never raced, power.
I have a graph, but I am leaving for a race, so if this is still up on Tuesday, I will post it up.
Thanks
LG
#4
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Originally Posted by LG Motorsports
I did some tuning, but this was a G5X-1 daily driver, so the guy was just interested in nice driver, never raced, power.
I have a graph, but I am leaving for a race, so if this is still up on Tuesday, I will post it up.
Thanks
LG
I have a graph, but I am leaving for a race, so if this is still up on Tuesday, I will post it up.
Thanks
LG
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#11
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Originally Posted by greekss
damn.......... but y only 369 b4, what were the mods on it b4 the heads ?
#12
I was told 369 was the cam only tuned,the car doesnt have alot of the bolt ons. this is not the first time I have seen 50+ hp from just a head swap with my 2.5 heads and of course with the added airflow tuning is necesary
#13
just backed up another 50+ hp stg2.5 5.3l heads only install. 394 before with a g5x2 447 after. Customer is going to try an lsx and see what that does on top of the heads
#18
Nice Numbers
Can you respond to this thread:
https://ls1tech.com/forums/showthrea...3&page=1&pp=40
thanks,
Chris
Can you respond to this thread:
https://ls1tech.com/forums/showthrea...3&page=1&pp=40
thanks,
Chris